Feature management platform vs. simple A/B testing
LaunchDarkly is primarily a feature management and feature flag platform that also offers experimentation capabilities. It's excellent for progressive rollouts and feature toggles, but experimentation is an add-on, not the core focus.
Why choose runab over LaunchDarkly
Built for A/B testing, not flags
LaunchDarkly added experimentation to a feature flag tool. runab was built specifically for A/B testing.
No per-user charges
LaunchDarkly charges $10 per 1,000 MAU. At 100k users, that's $1,000/month just for users. runab is unlimited.
One thing, done well
LaunchDarkly has flags, segments, targeting, and more. runab helps you pick between A and B. That's it.
Feature comparison
LaunchDarkly limitations
- Experimentation is secondary to feature flags
- Complex pricing model (seats + MAU)
- Charges per user — scales with traffic
- Overkill if you just want A/B testing
- Can be expensive at scale
Pricing comparison
runab pricing
Free tier includes unlimited visitors. Pro is $29/month max with unlimited everything.
LaunchDarkly pricing
Free Developer tier for limited use. Foundation plan is $12/seat/mo + $10 per 1,000 client-side MAU. Experimentation is a separate add-on.
The honest take
Choose runab if:
You want to test an idea, get an answer, and ship. No enterprise contracts, no traffic pricing, no complexity.
Choose LaunchDarkly if:
Engineering teams who need feature flags for deployments and want experimentation as part of that workflow.
Choose LaunchDarkly if you need feature flags and want experimentation as a bonus. Choose runab if A/B testing is your primary goal.
Ready to try the simpler way?
Free forever with unlimited visitors. Start testing in under 2 minutes.